Shuttle-box-selecting mechanism for looms.



W. A. CLARK.

SHUTTLE BOX SELECTING MBGHANISM FOR LOOMS. APPLICATION FILED NOV.14,1907. RENEWED APR. 4, 1913.

1 ,O77,904.. I PatentedNov. 4; 1913.

3 SHEETS-SHEET 1.

, INVENTOR WITNESSES:

' v 26k ATTORMEY$ 'COHJMBIA P LANDOBAPH C0 .,'WASHINGTON D c W. A.CLARK. SHUTTLE BOX SELECTING MEGHANISM FOR LOOMS. APPLICATION FILED NOV.14, 1907. RENEWED APR. 4, 1913.

1,077,904, Patented Nov; 4, 1913.

3 SHEETS-SHEET 2.

WlT/VESSES: 4 9/ IIVVEIVTOR fii ATTORNEYS COLUMBU PLANOGRAPH 410.,WASHINGTON, D. c.

W. A. CLARK.

SHUTTLE BOX SELECTING MECHANISM FOR LOOMS. APPLIOA'TION FILED NOV. 14,1907. RENEWED APR. 4, 1913.

1,077,904. Patented Nov. 4,1913

3 SHEETS-SHEET 3.

STATES PATENT OFFICE.

WALTER-A. CLARK, OF BRANTFORD, ONTARIO, CANADA, ASSIGNOR TO SLINGSBYMANFG. CO. LTIL, OF BRANTFORD, ONTARIO, CANADA.

sHUrrLE-Box-snmerme MECHANISM roe Looms.

i Specification of Letters Patent.

Patented Nov. 4, 1913.

Application filed lfl'ovem'ber 14, 1907, Serial No. 402,180. RenewedApril 4, 1913. Serial No. 758,965.

To all whom 2t mm concern:

Be it known tliat I, WALTER A. CLARK, a citizen of the Dominion ofCanada, and residing at Brantford, in the Province of Ontario, Canada,have invented certain new and useful Improvements in Shuttle-Box-Selcctin Mechanism for Looms; and I hereby declare .the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and usethe same.

My invention relates to color-selecting: mechanism for looms andespecially to mechanism of this character which is em- )loycd inblanket-weaving looms. Certain lcatures of the invention are es eciallyapplicable to the weaving of blan rets having a considerable area ofsolid color, as White, with colored borders. a The selecting mechanismwhich is-most ordinarily employed with looms of this type comprises'achain carryingat desired intervals rollers which bring into contact earsto which are attached hooks for lifiing the shuttle box' to bring theshuttle having the desired color of weft therein in operative relationto the picking stick, together with meansfor disengaging the gears andaltering the posi; tion of the shuttle box when the selectedi shuttlehas made the necessary number of vibrations. This mechanism is heavy,expensive, and liable to derangement.

The object of my invention'is to provide sclectin" mechanism of thischaracter which is simp c efficient, relatively inexpensive, and w ichwill permit the pattern to be; changed with comparative ease. I realizethese objects by the embodiment of my invcntion disclosed in thedrawingsforming a part thereof, wherein 1 igure 1 represents a sideelevation of my mechanism, showin the connections between the same an amoving part of the machinery and indicating the connections between thesame and the shuttle box. Fig. 2 represents a front elevation of mymechanism, the operating shaft, and the bell crank connections with theshuttle box being omitted.- Fi L 3 represents a top lan view of theselecting drum, operating evers for the shuttle box, and associatedparts. Fig. 4'represcnts"an enlarged detail of a modification of thedrum construction shown in the preceding figure"; Fig. 6 represents aframe of the loom, said side elevation of one of the selecting ringsshown in Fig. 1 and Fig. 6 represents a modification of the means foroperating the shuttle box from the selecting drum. Fi 7 is a view inelevation of an old and well known type of shuttle lifting mechanism.Fig. 8 is an end view of the same. Fig. 9 is a section on line 99, Fig.7.

Describing the parts by reference characters, 1 represents a drive shaftfor the selecting mechanism, and 2 a portion of the ortion beingprovided with a journal for t c drive shaft and with a air of brackets 3for the selecting mechanism.

4 denotes an eccentric with which shaft 1 is provided and 5 an eccentricstrap thereon connected with a link 6, the upper end of which islpivotally connected to a bell crank lever 7 w ich is ournalcd on ashaft 8 supported by bracket members 3. The vertical arm of hell cranklever 7 has pivoted thereto a pawl 9 cooperating with the ratchet wheel10 which is rigid with shaftB. The lower end of the pawl is provided;with a lug 9 which rests against the face of the ratehet wheel andassists in retaining the pawl in proper relation to said wheel.

11 denotes a selecting drum which rotates with the shaft 8, beingsuitably secured thereto. This drum is provided on its convex surfacewith circumferential rows of lugs or pins 12. Four such rows are shown,but it will be evident that a reator or less number of rows may be employed, depending upon the variet of colors which will be used in theparticu ar pattern to be woven.

A shaft 13 extends across the top of the drum, the shaft b ng sup ortedby the bracket arms 3. On this sha t are journaled bell crank levers 14.the lower ends of which bear upon the surface of the drum 11 and are ofconsiderable circumferential extent with respect to said drum, for a parose to be hereinafter explained. On a siaft 15 which may be supported inany suitable manner, there is mounted a corresponding number of bollcrank levers 16. The vertical arms of these levers are connected to thevertical arms of lovers 14 by means and 19 respectively, which .notchesare adapted to receive loops 20 and 21' carried suchadjustment," leversl4 and 16 are pro-- vided with downwardly inclined notches18 by oppositeends of links 17 respectively.

The other for horizontally extending arms of levers 16 are each providedwitha" rod or link 22 which is connected with the mecha nism ordinarilyemployed for the purpose of operating the shuttle box, Awell known 'formof this mechanism is, illustrated in Figs. 7, 8" and,,9,1 wherein arepresents a shaft which is secured in the bed of the machine, and onsaidshaft are'mounted ;a

horizontally arrangedseries of levers b, bf ,1

b and b Each-lever is "secured to one of the rods '22-intermediate'itsends,'as at 10, and on the free end ofeach lev ris mounted a gear wheel(2, d, d jand (Z Onga shaft e secured on the bed of the frame is mounteda large gear 7, andthe arrangement,issueh that any of the gears (Z, (K,d fland can be drawn up .and caused to mesh with said gear 1. The saidgear f is operativelyfcon nected with 1 other. portions of the machineso that it is driven all the time the machine is inoperation; To thegears (Z, d, (Z2; and

(i areconnected rods g, g, g and g respecti'vely by means of crank pins.To the rod 9 is secured a lever arm h, the lower end of the said lever,arm' hpbeing pivotal-1y supported from the bed. of the-machine, at Z.To the rod 9" is secured alever arm hf which is pivoted to the. machineat Z and the free end of said lever arm carries a'sheave j To therod gis securedv a. lever arm if which is pivotally' supported from the bedof the machine at: Z and the lower end of.

the lever arm, 71 carriesarsheaverm. To

the rod'g is secured a lever arm h? and the lower endot said arm ispivotally supported from the bed of themachineat 1. A pair of sheaves 7)are rotatably, mounted on the bed of the machine, Z lda cable n issecured to the lever arm 71/ and is then carried over the sheave m, thenover one of the sheaves p andthe lowerend is secured .tothe shuttle boxframe 1' containing the shuttles 's; .A

second cable 0 is secured to the lever arm h and is then carried overthesheave m, thenover the other sheave p and its end-is seq cured to theshuttle' box. Now ,,when*itis desired tot-bring the first shuttle intopo; sition the lever b is raised,when it is desired tobringthe secondshuttlef intoposi- :1 tion the lever b is"raised,when it=is desired tobring the third shuttle into position the levers b and Z) are raisedtogether and when: it is desired to bring the fo11rth,orbottom' shuttleinto position the levers b and b are' vraised togethen-"T'Aseachle'veris raisedthe gear on the end-thereof will be-brought into contactwith the large gear f and the rods connected to the gears will be"actuated which 1 in turn will operate the: lever arms It will beobserved "provided with a recess :10 in which thetoe of pawl 9 restsinFiga 1v and that one end downwardly; extendingterms of" levers 14:.

connected to said rods, thereby drawing up r the cables n and 0, whichin turn draw up the shuttle box frame} This head motion forms'no partof. my inventionfit beingold in'lthe art to operate the shuttle-boxes byworking jacks 0t vibrated gears." In Fig. 4, I have show j a detail of amodificationaof the drum 1'1. In-this modifica I tion, the drum '11 isshown as wheel halvfling at one lateral edge thereof an outwardlyprojecting circumferential flange 23; provided with ratchet. teeth,constituting a ratchet wheel similarn tov. ratchet. wheel 10 for thepurpose .ofoperaltingthe drum-1 In place of the circumferential rowsofrteeth orilugs with which drum, 11 is provided,v I;

applvtothe 'surfaceot the wheelta suitable number; of ,toothed wheelsor. rings, 24, said rings being secured to' thelwheelasby means of screwbolts 25. These rings will be pro- Ivided with teeth so-a-rranged as toengage the .lower ends of vlevers .-1f4' and'thereby cause said leversto operate the shuttlebox h to automatically selectioroperatio'n ashut-jtle having the'desired color of weft thereon toenable the desiredpattern to be. woven .7

into-the blanket, i v i i that the ratchet: 10" is of shaft 8 isprovidedwith an operating] handle 8% The purp'oseiof this recess is topermit of the oscillation of -the lever? by the driveshaft'l without anycorresponding operation ofthe selecting drum during the time'that it isdesired to employ a solid pat-- 1 tern of white or other color in the?blanket. \When it'is desired. to; apply the border to the blanket, theoperator throws thehandle 18* to move the recess lO out of register-withpawl 9,whereupon the oscillation o filever 7- causes the drum to berotated, and the pins or lugsthereon' will oscillate levers 14 to causethe automatic ;selection of the shuttlles hfavingthe various colors'ofiweft there on. It will be observed, from Fig.1,"that the-lowerorbearing ends-of levers =14: are

of considerable circumferential eirtent. I This is for the purpose ofenabling a pin or-lug which lifts the low er endiof said lever to idwell flthereunderja' sufficient time 'to' enable the appropriates'hiittleito} be vibrated madly-extendi g aria 528' similafto the Theother arm 29 of lever 26 projects over and beyond the arm 28 and isprovided with an aperture for the reception of the link22 by whichconnection with the shuttle box operating mechanism is made.

From the foregoing description, the operation of my invention will beclear. Assuming the parts to be in the position shown in Fig. 1, therotation of shaft 1 will cause 'no operation of the selecting drum untilsuch time as the necessary amount of solid weft has been supplied. Atthis time, the operator throws the handle 8 until the pawl 9 has riddenover the tooth adjacent to said recess, whereupon the operation of shaft1 will cause the drum to be rotated, and said drum, through the pins orlugs projecting therefrom, will automatically select for vibration theshuttle having the desired color 20 of weft thereon.

Having described my invention, I claim: In a loom, the combination witha series of shuttle boxes and means for raising said shuttle boxes, of arotary drum having thereon a plurality of pins, a ratchet wheel foroperating said drum, said wheel being provided with an elongated recess,a pawl adapted to engage said wheel, a series of hell crank leversarranged in proximity to said drum and adapted to be engaged by the pinson said drum, means for connecting the levers with the means for raisingsaid shuttle boxes, means for rotating said drum independently of saidratchet and means for gipgrating said pawl, substantially as speci- Intestimony whereof, I sign the foregoing specification in the presence oftwo witnesses.

WALTER A. CLARK.

Witnesses EDNA LmpnLL, Jim. R. VAREY.

flopiee of thin patent may be obtained for five cents each, byaddressing the Commissioner of Iatents, Washington, D. 0.

